learn over lunchIndiana Watersheds Webinar Series Webinars to Strengthen Watershed Management in Indiana

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Real-time Nitrate Monitoring in Streams and Rivers

nitrate sampling equipment

Aired: June 11, 2014 from noon to 1pm Eastern

Nitrate is essential for plant life, but in excess amounts can lead to degraded water quality.  The USGS uses a variety of methods to characterize nitrate levels in streams and rivers across the nation.  Traditional methods have included discrete sampling and modeling.  More recently, nitrate levels have been measured directly using in-stream analyzers that use chemical and optical technology.  An overview of equipment and techniques used to measure nitrate levels in streams and rivers will be discussed during this presentation.

Tim Lathrop

Meet the Presenter:

Tim Lathrop, U.S. Geological Survey

Tim Lathrop began working for the U. S. Geological Survey (USGS) in 2001.  Tim has been with the National Water Quality Assessment (NAWQA) program for over 10 years. NAWQA is tasked by Congress to understand the Nation’s water quality, how water-quality conditions are changing over time, and how natural features and human activities affect water-quality.  NAWQA stream monitoring included the operation of real-time water quality sensors and the collection of discrete stream samples.  Tim now leads the USGS IN Water Science Center’s Sentry gage program which focusses on continuous water-quality data collection and modelling of constituents that are not directly monitored.



Presentation slides (in pdf)

View the archived webinar

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